Update chagenlog with #293

Author: igaztanaga

doc/container.qbk

@@ -1434,7 +1434,7 @@ use [*Boost.Container]? There are several reasons for that:
 
 [section:release_notes Release Notes]
 
-[section:release_notes_boost_1_90_00 Boost 1.90 Release]
+[section:release_notes_boost_1_90_00 Boost    Release]
 
 * Reimplemented [classref boost::container::deque]. The original implementation was based on
    the SGI's original data structure (similar to libstdc++). Main changes:
@@ -1447,6 +1447,7 @@ use [*Boost.Container]? There are several reasons for that:
 
 * Fixed bugs/issues:
    * [@https://github.com/boostorg/container/issues/248 GitHub #248: ['"flat_map slow insertion introduced in boost-1.80.0"]].
+   * [@https://github.com/boostorg/container/pull/317/ GitHub #293: ['"UBSAN reports unaligned access error"]].
    * [@https://github.com/boostorg/container/pull/294 GitHub #294: ['"CMake: Add option to use header-only Boost::container"]].
    * [@https://github.com/boostorg/container/issues/300 GitHub #300: ['"Warnings when building with clang-20"]].
    * [@https://github.com/boostorg/container/pull/305 GitHub #305: ['"Warnings with -Wstrict-prototypes"]].